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Pilina Cheyennica
''Pilina'' is an extinct genus of paleozoic monoplacophorans in the family Tryblidiidae. Species Species in the genus ''Pilina'' include: * ''Pilina acuminatum'' Perner (in Koken & Perner), 1925 * '' Pilina cheyennica'' Peel, 1977 - from Ordovician in the Keel Member in Oklahoma * ''Pilina esthonum'' (Koken, 1897)Koken E. 1897. ''Die Gastropoden des baltischen Untersilurs''. Bulletin de l'Académie Impériale des Sciences de St. Pétersburg 7(2):97-214. - synonym: ''Triblidium esthonum'' * '' Pilina ovoideum'' Perner (in Koken & Perner), 1925 * '' Pilina solarium'' (Lindström, 1884)Lindström G. 1884''On the Silurian Gastropoda and Pteropoda of Gotland'' Stockholm, 250 ppPage 59 figure 3-4. - synonym: ''Palaeacmaea solarium'' * '' |
Pilina Unguis
''Pilina unguis'' is an extinct species of Paleozoic Silurian monoplacophoran. It was first named as ''Tryblidium unguis'' and described by Gustaf Lindström in Latin from the Silurian deposits of Gotland in Sweden, in 1880. Shell description The length of the shell is 59–67 mm, width 47–51 mm and the height of the shell is 15–16 mm. With is shell size up to 67 mm was at least twice larger than any recent known living monoplacophoran species.Moore J. & Raith Overhill R. 2006. ''An introduction to the invertebrates'', Second Edition. Cambridge, Cambridge University. Press, 319 pp. Page 126 The shell has an obovate outline, anteriorly acuminate, posteriorly expanded, with the greatest width somewhat behind the median, transverse axis of the shell. It is regularly and moderately convex, being the most elevated near the median transverse axis. The apex is close to the anterior margin and only very little prominent. The surface of the shell is covere ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Monoplacophora
Monoplacophora , meaning "bearing one plate", is a polyphyletic superclass of molluscs with a cap-like shell inhabiting deep sea environments . Extant representatives were not recognized as such until 1952; previously they were known only from the fossil record, and were thought to have become extinct 375 million years ago. Although the shell of many monoplacophorans is limpet-like in shape, they are not gastropods, nor do they have any close relation to gastropods. Definition Discussion about monoplacophorans is made difficult by the slippery definition of the taxon; some authors take it to refer to all non-gastropod mollusks with a single shell, or all single-shelled mollusks with serially repeated units; whereas other workers restrict the definition to cap-shaped forms, excluding spiral and other shapes of shell. The inclusion of the gastropod-like Bellerophontoidea within the group is also contentious. One attempt to resolve this confusion was to separate out the predom ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tryblidiidae
Tryblidiidae is an extinct family of paleozoic monoplacophorans in the superfamily Tryblidioidea. Genera Genera in the family Tryblidiidae include: * ''Tryblidium'' Gustaf Lindström, Lindström, 1880. From Ordovician and Silurian.W. H. Dall, Dall W. H. 1913. ''Gastropods''. In: Charles Rochester Eastman, Eastman C. R. ''Text Book of Paleontology edited by C. R. Eastman adapted from German of K. A. von Zittel, 2nd edition revised and enlarged by the editor in collaboration with the following named specialists: R.S. Bassler, W. H. Dall, Charles Doolittle Walcott, C. D. Walcott.'Volume 1 MacMillan & Co., London. xii + 839 ppPage 521 * ''Drahomira'' Perner, 1903 ** ''Drahomira barrandei'' ** ''Drahomira glaseri'' ** ''Drahomira kriziana'' ** ''Drahomira rugata'' * ''Helcionopsis'' Ulrich & Scofield, 1897 * ''Pentalina (mollusc), Pentalina'' Horný, 1961 ** ''Pentalina prantli'' Horný, 1961 * ''Pilina'' References Prehistoric monoplacophorans Prehistoric mollusc families ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
The Paleobiology Database
The Paleobiology Database is an online resource for information on the distribution and classification of fossil animals, plants, and microorganisms. History The Paleobiology Database (PBDB) originated in the NCEAS-funded Phanerozoic Marine Paleofaunal Database initiative, which operated from August 1998 through August 2000. From 2000 to 2015, PBDB received funding from the National Science Foundation. PBDB also received support form the Australian Research Council. From 2000 to 2010 it was housed at the National Center for Ecological Analysis and Synthesis, a cross-disciplinary research center within the University of California, Santa Barbara. It is currently housed at University of Wisconsin-Madison and overseen by an international committee of major data contributors. The Paleobiology Database works closely with the Neotoma Paleoecology Database, which has a similar intellectual history, but has focused on the Quaternary (with an emphasis on the late Pleistocene and Holoce ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pilina Acuminatum
''Pilina'' is an extinct genus of paleozoic monoplacophorans in the family Tryblidiidae. Species Species in the genus ''Pilina'' include: * ''Pilina acuminatum'' Perner (in Koken & Perner), 1925 * ''Pilina cheyennica'' Peel, 1977 - from Ordovician in the Keel Member in Oklahoma * ''Pilina esthonum'' (Koken, 1897)Koken E. 1897. ''Die Gastropoden des baltischen Untersilurs''. Bulletin de l'Académie Impériale des Sciences de St. Pétersburg 7(2):97-214. - synonym: ''Triblidium esthonum'' * ''Pilina ovoideum'' Perner (in Koken & Perner), 1925 * ''Pilina solarium'' (Lindström, 1884)Lindström G. 1884''On the Silurian Gastropoda and Pteropoda of Gotland'' Stockholm, 250 ppPage 59 figure 3-4. - synonym: ''Palaeacmaea solarium'' * ''Pilina unguis'' (Lindström, 1880) Nils Peter Angelin, Angelin N. P. & ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pilina Cheyennica
''Pilina'' is an extinct genus of paleozoic monoplacophorans in the family Tryblidiidae. Species Species in the genus ''Pilina'' include: * ''Pilina acuminatum'' Perner (in Koken & Perner), 1925 * '' Pilina cheyennica'' Peel, 1977 - from Ordovician in the Keel Member in Oklahoma * ''Pilina esthonum'' (Koken, 1897)Koken E. 1897. ''Die Gastropoden des baltischen Untersilurs''. Bulletin de l'Académie Impériale des Sciences de St. Pétersburg 7(2):97-214. - synonym: ''Triblidium esthonum'' * '' Pilina ovoideum'' Perner (in Koken & Perner), 1925 * '' Pilina solarium'' (Lindström, 1884)Lindström G. 1884''On the Silurian Gastropoda and Pteropoda of Gotland'' Stockholm, 250 ppPage 59 figure 3-4. - synonym: ''Palaeacmaea solarium'' * '' |
Journal Of Paleontology
The ''Journal of Paleontology'' is a peer-reviewed scientific journal covering the field of paleontology. It is published by the Paleontological Society. Indexing The ''Journal of Paleontology'' is indexed in: *BIOSIS Previews *Science Citation Index *The Zoological Record *GeoRef __NOTOC__ The GeoRef database is a bibliographic database that indexes scientific literature in the geosciences, including geology. Coverage ranges from 1666 to the present for North American literature, and 1933 to the present for the rest of t ... References Paleontology journals Publications established in 1927 Academic journals published by learned and professional societies Cambridge University Press academic journals Bimonthly journals Paleontological Society {{paleo-journal-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Keel Member
The keel is the bottom-most longitudinal structural element on a vessel. On some sailboats, it may have a hydrodynamic and counterbalancing purpose, as well. As the laying down of the keel is the initial step in the construction of a ship, in British and American shipbuilding traditions the construction is dated from this event. Etymology The word "keel" comes from Old English , Old Norse , = " ship" or "keel". It has the distinction of being regarded by some scholars as the first word in the English language recorded in writing, having been recorded by Gildas in his 6th century Latin work ''De Excidio et Conquestu Britanniae'', under the spelling ''cyulae'' (he was referring to the three ships that the Saxons first arrived in). is the Latin word for "keel" and is the origin of the term careen (to clean a keel and the hull in general, often by rolling the ship on its side). An example of this use is Careening Cove, a suburb of Sydney, Australia, where careening was carrie ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oklahoma
Oklahoma (; Choctaw language, Choctaw: ; chr, ᎣᎧᎳᎰᎹ, ''Okalahoma'' ) is a U.S. state, state in the South Central United States, South Central region of the United States, bordered by Texas on the south and west, Kansas on the north, Missouri on the northeast, Arkansas on the east, New Mexico on the west, and Colorado on the northwest. Partially in the western extreme of the Upland South, it is the List of U.S. states and territories by area, 20th-most extensive and the List of U.S. states and territories by population, 28th-most populous of the 50 United States. Its residents are known as Oklahomans and its capital and largest city is Oklahoma City. The state's name is derived from the Choctaw language, Choctaw words , 'people' and , which translates as 'red'. Oklahoma is also known informally by its List of U.S. state and territory nicknames, nickname, "Sooners, The Sooner State", in reference to the settlers who staked their claims on land before the official op ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pilina Esthonum
''Pilina'' is an extinct genus of paleozoic monoplacophorans in the family Tryblidiidae. Species Species in the genus ''Pilina'' include: * ''Pilina acuminatum'' Perner (in Koken & Perner), 1925 * '' Pilina cheyennica'' Peel, 1977 - from Ordovician in the Keel Member in Oklahoma * '' Pilina esthonum'' (Koken, 1897)Koken E. 1897. ''Die Gastropoden des baltischen Untersilurs''. Bulletin de l'Académie Impériale des Sciences de St. Pétersburg 7(2):97-214. - synonym: ''Triblidium esthonum'' * '' Pilina ovoideum'' Perner (in Koken & Perner), 1925 * '' Pilina solarium'' (Lindström, 1884)Lindström G. 1884''On the Silurian Gastropoda and Pteropoda of Gotland'' Stockholm, 250 ppPage 59 figure 3-4. - synonym: ''Palaeacmaea solarium'' * '' |
Pilina Ovoideum
''Pilina'' is an extinct genus of paleozoic monoplacophorans in the family Tryblidiidae. Species Species in the genus ''Pilina'' include: * ''Pilina acuminatum'' Perner (in Koken & Perner), 1925 * ''Pilina cheyennica'' Peel, 1977 - from Ordovician in the Keel Member in Oklahoma * ''Pilina esthonum'' (Koken, 1897)Koken E. 1897. ''Die Gastropoden des baltischen Untersilurs''. Bulletin de l'Académie Impériale des Sciences de St. Pétersburg 7(2):97-214. - synonym: ''Triblidium esthonum'' * '' Pilina ovoideum'' Perner (in Koken & Perner), 1925 * '' Pilina solarium'' (Lindström, 1884)Lindström G. 1884''On the Silurian Gastropoda and Pteropoda of Gotland'' Stockholm, 250 ppPage 59 figure 3-4. - synonym: ''Palaeacmaea solarium'' * '' |
Pilina Solarium
''Pilina solarium'' is an extinct species of a paleozoic Silurian monoplacophoran. It was first named as ''Palaeacmaea solarium'' and described by Gustaf Lindström from Silurian of Gotland Gotland (, ; ''Gutland'' in Gutnish), also historically spelled Gottland or Gothland (), is Sweden's largest island. It is also a province, county, municipality, and diocese. The province includes the islands of Fårö and Gotska Sandön to the ... in Sweden in 1884. Shell description The shell is patelliform and regularly acuminate. The apex is nearly median or slightly anterior. The outline of the shell is oblongate. The outside of the shell is smooth, only concentrically wrinkled at regular distances by larger elevated ridges, the interstices between them being finely striated by parallel lines. Interiorly there is around the apex a narrow circle of detached muscular scars, visible on the nucleus. The length of the shell is 6 mm, width 4 mm and the height of the shell i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
